21439845

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2347}}^1$

素因数の和:2394

約数の個数: 48

約数和(自身を含む): 43954560

約数和(自身を除く): 22514715

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2347, 3045, 7041, 9135, 11735, 16429, 21123, 35205, 49287, 68063, 82145, 105615, 147861, 204189, 246435, 340315, 476441, 612567, 739305, 1020945, 1429323, 2382205, 3062835, 4287969, 7146615, 21439845]

約数ペア:

[(1, 21439845), (3, 7146615), (5, 4287969), (7, 3062835), (9, 2382205), (15, 1429323), (21, 1020945), (29, 739305), (35, 612567), (45, 476441), (63, 340315), (87, 246435), (105, 204189), (145, 147861), (203, 105615), (261, 82145), (315, 68063), (435, 49287), (609, 35205), (1015, 21123), (1305, 16429), (1827, 11735), (2347, 9135), (3045, 7041)]